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INDONESIA
Jurnal Ilmu Pertanian
Published by Universitas Gadjah Mada
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 9, No 3 (2024): December" : 7 Documents clear
The effect of a combination of nitrogen and phosphorus fertilization with bamboo biochar rate on the growth and productivity of rice Mahyudi, Mahyudi; Purwanto, Benito Heru; Hanudin, Eko
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.75250

Abstract

The combination of fertilizer treatment with biochar has shown to be a sustainable and ecologically friendly method of increasing soil fertility and crop productivity. However, its combined impact on nutrient availability and rice yield is still unclear. This study aimed to investigate the effect of bamboo biochar produced by the Kontiki method in combination with nitrogen and phosphorus fertilization on nutrient availability in the soil and the productivity of rice. The treatment factors included the fertilizer combination factor (B) consisting of B1 (N + P fertilizer + Biochar), B2 (N fertilizer + Biochar), B3 (P fertilizer + Biochar), and B4 (Biochar + no fertilizer), and the biochar dose factor (F) comprising F0 (0 tons ha⁻¹), F1 (5 tons ha⁻¹), and F2 (10 tons ha⁻¹), resulting in 36 experimental plots with 12 treatment combinations. Measurement of ammonium and nitrate concentration in the soil started on the 15th day after planting, following the measurement of the growth of rice plant biomass with an interval of 15 days. The measurement of available P in the soil was started on day 45 after planting and continued until harvesting time with the same time intervals as the measurements of ammonium and nitrate. The study found that combining bamboo biochar treatment with nitrogen and phosphorus fertilizer greatly boosted the availability of nitrogen (ammonium and nitrate) and availability of P in the soil. Treatment combinations improved lowland rice yield (P < 0.05) by increasing plant height, number of tillers, dry weight of shoots and roots, grain weight per clump, 1000-grain weight, and grain yield.
Phosphorus status of five wetlands in Edo State Edosomwan, Lawrence Nosa; Agbogun, Lucky; Agbonifo, Patience Osariemen
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.76569

Abstract

This experiment was performed to determine the phosphorus levels in certain wetland soils in Edo State, Nigeria. Soil samples were collected from five wetlands at two depths: 0–15 cm and 15–30 cm. The samples were air-dried, sieved, and analyzed to ascertain the physical and chemical properties of the soils using standard laboratory techniques. The findings indicated that the majority of soil pH levels were slightly acidic, ranging from 6.6 to 7.0 (neutral), with the exception of soils from Obiemen, Agwa, and Benin, which exhibited moderate acidity (4.2–4.8). Soils from Irrua (Obiemen and Agwa) and Benin (Ikpoba Okha) demonstrated elevated phosphorus content, with a P range of 11.41–15.70 mg/kg, whereas soils from Ekpoma (Opoji), Benin (Oka-Naruovia), and Benin (Orhiomwon) exhibited low phosphorus levels, ranging from 2.88 to 5.56 mg/kg. There was a direct relationship between soil pH and the available phosphorus content. Therefore, there is need to augment the soils with P-fertilizers for increase crop productivity.
Sweet corn windbreaker’s effect on microweather changes and increases growth and yield of water spinach (Ipomoea reptans Poir.) on the Samas coastal sandy land Ulfah, Fajarani; Indradewa, Didik; Respatie, Dyah Weny
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.85810

Abstract

High wind speed is one of the limiting factors for plant cultivation in coastal sandy land. To mitigate this, sweet corn, an annual plant, can be cultivated as a windbreaker. Water spinach is one of the short-lived plants cultivated by farmers in coastal sandy land. The study aimed to figure out the microweather change, growth, and yield of water spinach protected by sweet corn as windbreaker in various planting locations in Samas coastal sandy land. The research had been conducted in Samas coastal sandy land, Bantul Regency, Yogyakarta Special Region, from October to November 2022. The experiment was arranged in Randomized Complete Block Design non-factorial, containing five treatment levels and four repetitions. The treatment of the planting location of sweet corn as a windbreaker is without sweet corn, sweet corn positioned on the “east”, sweet corn on the “east and west”, sweet corn on the “south”, and sweet corn on the “south and north”. The data were analyzed using analysis of variance (ANOVA), and if the difference was marked, the data analysis was proceeded to Tukey HSD with α = 5%. The results showed that sweet corn windbreaker placed on the “east” was the most effective in decreasing wind speed, thereby modifying the microweather of water spinach plot by lowering air temperature and increasing air humidity and soil moisture content during November on the Samas coastal sandy land. Growth, dry matter accumulation, and water spinach yield increased, although the dry harvest index and fresh harvest index did not show any improvement.
Impact of organic matter and sand on soil characteristics, leaf area, and chlorophyll of sweet corn (Zea mays saccnutritionta Sturt) on Vertisol from Bojonegoro Sasongko, Purnomo Edi; Mindari, Wanti; Jayanti, Fara Amilia; Fatiha, Chosa Zahro
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.92816

Abstract

Vertisols contain clay minerals that expand significantly during the rainy season and shrink during the dry season. This condition causes changes in the availability of water and soil ions. This study aimed to examine the effect of adding organic matter (OM) and sand on changes in vertisols and plant growth. The study was conducted using a factorial Randomized Block Design (RBD). The first factor was 5 kinds of OM: control (B0), 15 tons of banana peel compost ha⁻¹ + cow dung (10:1) (B1), 15 tons of leaf litter compost ha⁻¹ (B2), 15 tons of water hyacinth compost ha⁻¹ + cow dung (1:1) (B3), and 1 ton of biochar ha⁻¹ (B4). The second factor was the provision of sand as much as 3 level, namely: 0% (P0), 20% (P1), and 40% (P2). Each treatment combination was repeated 3 times. Sweet corn was used as a growth indicator. The observed soil chemical parameters were soil pH, organic C, NH₄⁺ and NO₃⁻, and Cation Exchange Capacity (CEC) using standard methods. Leaf area was measured using the Arnon method. The results showed providing banana peel compost + cow dung with 40% sand increased the best NO₃⁻ and soil pH levels. The highest soil C-organic content was found in the treatment with aloe vera compost + cow dung and 0% sand. The best leaf area and plant chlorophyll levels were achieved using banana peel compost + cow dung with 20% sand.
Analysis of sweet corn growth and yield with the use of organic cow manure fertilizer Nurmalasari, Aprilia Ike; Supriyono, Supriyono; Linda, Franciska; Sukaya, Sukaya
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.94315

Abstract

Sweet corn is a horticultural crop that is widely cultivated and consumed by Indonesian people. Meeting the demand for sweet corn is still reliant on imports; therefore, increasing production by improving soil properties through proper fertilization. Cow manure with a content of N 2.33%, P 0.61%, and K 1.58% is able to add nutrients to the soil. This research aimed to obtain an optimum dose of organic fertilizer for sweet corn growth and yield. The doses of cow manure consisting of 5 levels: control, 10, 20, 30, and 40 tons ha⁻¹ were assigned in the randomized complete block design with 5 replications. Data analysis deployed analysis of variance (Anova) at 5% level, and if there were significant differences, it would be proceeded to Duncan Multiple Range Test  5% and orthogonal polynomial. The results showed that a dose of 20 tons ha⁻¹ was able to increase growth in plant height, stem diameter and number of leaves by 12.92%, 26.29%, and 15.67%, respectively, compared to the control. A dose of 35 tons ha⁻¹ can produce a weight of cob-husk and cob without-husk per plot, respectively, 4.38 kg plot⁻¹ and 2.64 kg plot⁻¹, and a productivity of cob-husk of 5.30 tons ha⁻¹. A dose of 38 tons ha⁻¹ can produce a cob without-husk productivity of 3.29 tons ha⁻¹.
Exploration and characteristic of the local cassava accessions from Central Sulawesi Amin, Mirawanty; Syafruddin, Syafruddin; Saidah, Saidah; Suwitra, I Ketut; Negara, Abdi; Ardjanhar, Asni; Asnawi, Asnawi
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.100627

Abstract

Cassava serves as a local food that contributes to food variety, enhancing food security and family nutrition. This is feasible due to Indonesia's extensive biodiversity, which facilitates the availability of varied and high-quality food. Each location has cassava with distinct properties. This research aimed to identify the presence of native cassava and their specific properties in Central Sulawesi. The used methodology included a survey and observation of plant agronomic and morphological characteristics, according to the General Guide for the Preparation of Food Crop Variety Descriptions established by the Centre for Plant Protection and Agricultural Licensing of the Ministry of Agriculture of the Republic of Indonesia. The investigation discovered three indigenous cassava accessions in Palolo District, Sigi Regency, Central Sulawesi: Kahubi Bula, Kahubi Palolo 1, and Kahubi Palolo 2. The three accessions possess distinct morphological, agronomic, and nutritional properties. Kahubi Bula has a greater stem diameter, whereas Kahubi Palolo 2 exhibits the lowest tuber size. The cyanide levels in the three accessions exhibited the traits of cassava, characterized by a sweet flavour owing to their low concentrations: 0.07 for Kahubi Bula, 0.01 for Kahubi Palolo 1, and 0.08 for Kahubi Palolo 2.
Responses of the five shallot cultivars to salicylic acid treatment under stress drought conditions Khotimah, Khusnul; Randi, Mohammad Jusuf; Juwanda, Muhammad; Laela, Titin Nur
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.102184

Abstract

Salicylic acid is a growth hormone that has been widely used to induce resistance to biotic and abiotic stresses. Plant genotypes have different responses to drought stress conditions. This study aimed to analyze the response of five shallot cultivars to drought stress mediated by salicylic acid. A total of five shallot cultivars treated with salicylic acid were tested under drought stress conditions. This study used a completely randomized design with 3 factors, namely the first was the concentration of salicylic acid (0 mM, 0.5 mM, and 1 mM), the second was the shallot cultivar (Bima Brebes, Tajuk, Bauci, Super Philip and Bima Juna), and the third was drought stress (without drought stress and with drought stress). All collected data were subjected to analysis of variance (ANOVA) and the mean differences were compared using Duncan Multiple Range test (α = 95%). Observation variables included leaf length, leaf number, stomatal density, relative water content, total chlorophyll, and leaf proline content. Based on the results of the study, drought stress significantly decreased leaf length and leaf number, reduced chlorophyll content, relative water content and stomatal density, chlorophyll content, and increased proline content of the leaves. On the other hand, exogenous application of SA to drought stressed shallot plants improved morphophysiological characters of shallot. Application of 1 mM salicylic acid was the best concentration. The results of this study also obtained two cultivars that showed fairly consistent morphophysiological performance, namely Bima Juna and Tajuk cultivars. These two cultivars can be recommended as genetic materials in the assembly of drought-tolerant varieties mediated by salicylic acid.

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